Highly sensitive NO2 response and abnormal P-N sensing transition with ultrathin Mo-doped SnS2 nanosheets

Synergistic enhanced NH3-sensing of SnS via Ti3C2Tx-oriented vertical growth and oxygen-containing functional group regulation

“…A vacuum space of 20 Å is set to reduce the interaction of adjacent layers in the z -direction. Adsorption energy ( E ad ) is exploited to express the strength of adsorption between the substrate and gas molecules, which is defined as: 46,47 E ad = E sub + E gas − E sub+gas where E sub , E gas and E sub+gas represent the energy of the substrate, single gas molecule and whole adsorption system, respectively.…”

Two‐Dimensional Nanomaterials for the Development of Efficient Gas Sensors: Recent Advances, Challenges, and Future Perspectives

“…[61] Synergistic combinations of metal oxides and 2D nanomaterials have demonstrated enhanced gas-sensing performance in many research studies and analyses. [62][63][64][65][66][67] Metal oxide-based semiconductor materials have been thoroughly observed. Gas response stability follows in post-transition metal oxides with a filled d 10 shell form oxides.…”

Ion‐Conductive Hydrogel‐Based Stretchable, Self‐Healing, and Transparent NO2 Sensor with High Sensitivity and Selectivity at Room Temperature

“…[ 20–22 ] For example, typical air pollutants such as nitrogen oxides (NO χ ), ammonia, sulfur dioxide (SO 2 ), carbon oxides (CO χ ), and volatile organic compounds (VOCs) are dangerous and harmful to human health for causing diseases such as chronic obstructive pulmonary disease (COPD). [ 23–25 ] Epidemiological studies show that COPD has become the fourth‐leading cause of death, leading to over 3 million people's death in 2011. [ 23 ] NO 2 is one of the most dangerous gases that can penetrate sensitive parts of the body.…”

“…Metal oxide semiconductors and 2D materials have been widely utilized to fabricate high‐sensitive gas sensors, while the operation of metal oxides based gas sensors demands the presence of oxygen and high operating temperature. [ 24,25,29–34 ] Furthermore, the self‐healability and intrinsic stretchability are generally lacking, limiting their applications for wearable gas sensors. To promote the development of stretchable gas sensors, recently some new gas sensing materials and device structures were proposed.…”